package engine_test

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"io"
	"testing"

	"github.com/stretchr/testify/require"
	"gitoa.ru/go-4devs/templating/engine"
	"gitoa.ru/go-4devs/templating/render"
)

func TestEncodeLoad(t *testing.T) {
	t.Parallel()

	ctx := context.Background()
	buff := bytes.Buffer{}

	exec, err := engine.NewEncode("json", func(w io.Writer, v interface{}) error {
		if err := json.NewEncoder(w).Encode(v); err != nil {
			return fmt.Errorf("%w", err)
		}

		return nil
	}).Load(ctx, render.NewReference("any"))
	require.NoError(t, err)
	require.NoError(t, exec(ctx, &buff, map[string]string{"name": "json data"}, nil))
	require.Equal(t, "{\"name\":\"json data\"}\n", buff.String())
}